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| Correlation of isothermal bainite transformation and austenite stability in quenching and partitioning steels |
| Shan Chen, Guang-zhen Wang, Chun Liu, Chen-chong Wang, Xian-ming Zhao, Wei Xu* |
| State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning, China |
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Abstract The possible decomposition of metastable austenite during the partitioning process in the high-end quenching and partitioning (Q&P) steels is somewhat neglected by most researchers. The effects of primary martensite and alloying elements including manganese, cobalt and aluminum on the isothermal decomposition of austenite during typical Q&P process were studied by dilatometry. The transformation kinetics was studied systematically and resulting microstructures were discussed in details. The results suggested that the primary martensite decreased the incubation period of isothermal decomposition by accelerating the nucleation process owing to dislocations especially on phase and grain boundaries. This effect can be eliminated by a flash heating which recovered dislocations. Co addition significantly promoted the bainite transformation during partitioning while Al and Mn suppressed the isothermal bainite transformation. The bainite transformation played an important role in carbon distribution during partitioning, and hence the amount and stability of austenite upon final quenching. The bainite transformation during partitioning is an important factor in optimizing the microstructure in Q&P steels.
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Received: 15 September 2017
Published: 01 December 2017
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| [1] |
J.G. Speer, E.D. Moor, K.O. Findley, et al. .[J].Metall. Mater. Trans. A, 2011, 42(12):3591-3601
|
| [2] |
P.J. Jacques, Q. Furn��mont, F. Lani, et al..[J].Acta Mater., 2007, 55(11):3681-3693
|
| [3] |
F.Lani, Q. Furn��mont, T. Van Rompaey, et al. .[J].Acta Mater., 2007, 55(11):3695-3705
|
| [4] |
HL. Yi, P. Chen, G.D. Wang,.[J].M.T. Ma. Chinese Engineering Science(in Chinese), 2014, 16(2):18-30
|
| [5] |
D.V. Edmonds, K. He, F.C. Rizzo, B.C. De Cooman, D.K. Matlock, J.G. Speer..[J].Mater. Sci. Eng. A, 2006, 438-440(11):25-34
|
| [6] |
A.J. Clarke, J.G. Speer, M.K. Miller, R.E. Hackenberg, D.V. Edmonds, D.K. Matlock, F.C. Rizzo, K.D. Clarke, E.D. Moor.[J].Acta Mater., 2008, 56(1):16-22
|
| [7] |
J.G. Speer, D.K. Matlock, B.C. De Cooman, J.G. Schroth.[J].Acta Mater., 2003, 51(9):2611-2622
|
| [8] |
Y. Li, Y. Lu, C. Wang, S. Li, L. Chen.[J].JISR Inter., 2011, 18(2):70-74
|
| [9] |
E.J. Seo, L. Cho, Y. Estrin, B.C. DeCooman.[J].Acta Mater., 2016, 113(7):124-139
|
| [10] |
X.D. Tan, Y.B. Xu, X.L. Yang, D. Wu.[J].Mater. Sci. Eng. A, 2014, 589(2):101-111
|
| [11] |
S. Yan, X.H. Liu, W.J. Liu, T.S. Liang, B. Zhang, L.Z. Liu, Y. Zhao.[J].Mater. Sci. Eng. A, 2017, 684(1):261-269
|
| [12] |
C.Wang, Y. Chang, J. Yang, W. Cao, H. Dong, Y. Wang.[J].JISR Inter., 2016, 23(2):130-137
|
| [13] |
S.S. Nayaka, R. Anumolu, R.D.K. Misra, K.H. Kim, D.L. Lee.[J].Mater. Sci. Eng. A, 2008, 498(12):442-456
|
| [14] |
C.Garcia-Mateo, F.G. Caballero, H.K.D.H. Bhadeshia.[J].ISIJ Inter., 2003, 43(11):1821-1825
|
| [15] |
C. Zhao, Di Tang, H. Jiang, S. Zhao, H. Li.[J].JISR Inter., 2008, 15(4):82-85
|
| [16] |
Y. Li, Y. Lu, C. Wang, S. Li, L. Chen.[J].JISR Inter., 2011, 8(2):70-74
|
| [17] |
van Bohemen SMC, Santofimia MJ, Sietsma J.[J].Scr. Mater, 2008, 58(6):488-491
|
| [18] |
G. Mandal, S.K. Ghosha, S. Bera, S. Mukherjee.[J].Mater. Sci. Eng. A, 2016, 676(10):56-64
|
| [19] |
HY. Li, X.W. Lu, X.C. Wu, Y.A. Min, X.J. Jin.[J].Mater. Sci. Eng. A, 2010, 527(9):6255-6259
|
| [20] |
S. V��ronique, S. Thomas.[J].Solid State Phenomena, 2011, 172-174(6):821-826
|
| [21] |
E. Pinto da Silva, W. Xu, C. F?jer, Y. Houbaert, J. Sietsma, R.H. Petrov.[J].Mater. Charac., 2014, 95(3):85-93
|
| [22] |
H.K.D.H. Bhadeshia.[J].Proc. R. Soc. A, 2010, 466(2113):3-8
|
| [23] |
K.Hase, C. Garcia-Mateo, H.K.D.H. Bhadeshia.[J].Mater. Sci. Technol., 2004, 20(12):1499-1505
|
| [24] |
W.Gong, Y. Tomot, Y. Adachi, A.M. Paradowska, J.F. Kelleher, S.Y. Zhang.[J].Acta Mater., 2013, 61(11):4142-4154
|
| [25] |
A.Navarro-L��pez, J. Sietsma, M.J. Santofimia.[J].Metall. Mater. Trans. A, 2016, 47(3):1028-1039
|
| [26] |
W.Gong, Y. Tomota, S. Harjo, Y.H. Sua, K. Aizawaa.[J].Acta Mater., 2015, 85(2):243-249
|
| [1] |
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| [2] |
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| [4] |
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2017, Vol. 24 
